FIR: check assignments and references to members in constructors

I.e. emit VAL_REASSIGNMENT on repeated assignments to `this.something`,
UNINITIALIZED_VARIABLE on reads of it before any assignment if there is
no initializer, and CAPTURED_MEMBER_VAL_INITIALIZATION on assignments
inside non-called-in-place functions and named classes.

^KT-55528 Fixed

compiler/testData/diagnostics/tests/controlFlowAnalysis/UninitializedOrReassignedVariables.fir.kt

@@ -134,7 +134,7 @@ class AnonymousInitializers(var a: String, val b: String) {
     get() = 20
 
     init {
-        i = 13
+        <!VAL_REASSIGNMENT!>i<!> = 13
         <!VAL_REASSIGNMENT!>j<!> = 34
     }
 
@@ -174,7 +174,7 @@ class AnonymousInitializers(var a: String, val b: String) {
     val n: Int
 
     init {
-        while (n == 0) {
+        while (<!UNINITIALIZED_VARIABLE!>n<!> == 0) {
         }
         n = 10
         while (n == 0) {

compiler/testData/diagnostics/tests/controlFlowAnalysis/assignmentInLocalsInConstructor.fir.kt

@@ -7,7 +7,7 @@ class Test {
         val t = object {
             fun some() {
                 // See KT-13597
-                a = "12"
+                <!VAL_REASSIGNMENT!>a<!> = "12"
             }
         }
 
@@ -20,7 +20,7 @@ class Test2 {
     init {
         val t = object {
             fun some() {
-                a = "12"
+                <!VAL_REASSIGNMENT!>a<!> = "12"
             }
         }
 
@@ -41,7 +41,7 @@ class Test4 {
     init {
         exec {
             // See KT-14381
-            a = "12"
+            <!CAPTURED_MEMBER_VAL_INITIALIZATION!>a<!> = "12"
         }
         a = "34"
     }

compiler/testData/diagnostics/tests/controlFlowAnalysis/initializationInLocalClass.fir.kt

@@ -27,7 +27,7 @@ fun gav() {
     class B {
         init {
             // Error! See KT-10445
-            x = ""
+            <!CAPTURED_VAL_INITIALIZATION!>x<!> = ""
         }
     }
     // Error! See KT-10042
@@ -36,7 +36,7 @@ fun gav() {
     class C(val s: String) {
         constructor(): this("") {
             // Error!
-            y = s
+            <!CAPTURED_VAL_INITIALIZATION!>y<!> = s
         }
     }
     <!UNINITIALIZED_VARIABLE!>y<!>.length
@@ -77,7 +77,7 @@ class My {
         class Your {
             init {
                 // Error! See KT-10445
-                x = ""
+                <!CAPTURED_VAL_INITIALIZATION!>x<!> = ""
             }
         }
     }

compiler/testData/diagnostics/tests/controlFlowAnalysis/initializationInLocalViaExplicitThis_after.fir.kt

@@ -10,9 +10,9 @@ class Test {
 
         run {
             // Not sure do we need diagnostic also here
-            this@Test.str = "B"
+            this@Test.<!VAL_REASSIGNMENT!>str<!> = "B"
         }
 
-        str = "C"
+        <!VAL_REASSIGNMENT!>str<!> = "C"
     }
-}
+}

compiler/testData/diagnostics/tests/controlFlowAnalysis/initializationInLocalViaExplicitThis_before.fir.kt

@@ -10,9 +10,9 @@ class Test {
 
         run {
             // Not sure do we need diagnostic also here
-            this@Test.str = "B"
+            this@Test.<!VAL_REASSIGNMENT!>str<!> = "B"
         }
 
-        str = "C"
+        <!VAL_REASSIGNMENT!>str<!> = "C"
     }
-}
+}

compiler/testData/diagnostics/tests/controlFlowAnalysis/propertiesInitWithOtherInstance.fir.kt

@@ -3,9 +3,9 @@ class A(val next: A? = null) {
     init {
         next?.<!VAL_REASSIGNMENT!>x<!> = "a"
         x = "b"
-        this.x = "c"
-        x = "d" // don't repeat the same diagnostic again with this receiver
-        this.x = "e"
+        this.<!VAL_REASSIGNMENT!>x<!> = "c"
+        <!VAL_REASSIGNMENT!>x<!> = "d" // don't repeat the same diagnostic again with this receiver
+        this.<!VAL_REASSIGNMENT!>x<!> = "e"
 
         next?.<!VAL_REASSIGNMENT!>x<!> = "f"
     }

compiler/testData/diagnostics/tests/controlFlowAnalysis/propertiesInitWithOtherInstanceInner.fir.kt

@@ -11,9 +11,9 @@ class Outer {
             outer.<!VAL_REASSIGNMENT!>outerProp<!> = "3"
 
             innerProp = "4" + inner.innerProp
-            this@Inner.innerProp = "5"
-            innerProp = "6" // do not repeat the same diagnostic with this receiver
-            this@Inner.innerProp = "7"
+            this@Inner.<!VAL_REASSIGNMENT!>innerProp<!> = "5"
+            <!VAL_REASSIGNMENT!>innerProp<!> = "6" // do not repeat the same diagnostic with this receiver
+            this@Inner.<!VAL_REASSIGNMENT!>innerProp<!> = "7"
 
             inner.<!VAL_REASSIGNMENT!>innerProp<!> = "8"
         }

compiler/testData/diagnostics/tests/controlFlowAnalysis/propertiesInitWithOtherInstanceThisLabel.fir.kt

@@ -3,9 +3,9 @@ class A(val next: A? = null) {
     init {
         next?.<!VAL_REASSIGNMENT!>x<!> = "a"
         this@A.x = "b"
-        this.x = "c"
-        x = "d" // don't repeat the same diagnostic again with this receiver
-        this@A.x = "e"
+        this.<!VAL_REASSIGNMENT!>x<!> = "c"
+        <!VAL_REASSIGNMENT!>x<!> = "d" // don't repeat the same diagnostic again with this receiver
+        this@A.<!VAL_REASSIGNMENT!>x<!> = "e"
 
         next?.<!VAL_REASSIGNMENT!>x<!> = "f"
     }